Team 1 can win if Hashirama can enhance Madaras techniques with his senjutsu. That way, Madara can bypass truthseekers and proceed to weaken Obito in about 15 minutes as he stated he would.
mada: the only thing that changes is the time it takes to bloom\\
mada: I would say that the time limit is roughly 15 minutes…\\
mada: and in that time in order to stop obito and take his place\\
mada: I will use your power as sage\\
Kakashi's PS has only shown to throw 4 Kamui shurikens at once. Shinsuusenju loses 4 arms and destroys Kakashi's PS in the process. Kakashi survives due to intangibility, but in CQC, he can't tell the difference between Hashirama's clone and the original.
The Flower world also hard counters intangibility since Kakashi is forced to stay intangible or risk being put to sleep.
If Shinju is already summoned ,then obito cant solo since Shinju release is his only chance to solo vote guys together .
however kakashi solo low diff with or without susano .
-Madara's PS and kuarma's head get ripped apart by long range kamui or kakashi can just bypass susano and kill madara with kamui snipe.
-Hashirama and Madara whole firepower get phased through .Flower of the world gets cut by multiple lightening chain used by intangible kakashi and his clones.
-Hashirama and his clones get stomped in CQC by kakashi and his clones using kamui raikeri.